Pipe holding and turning means



Feb. 24, 1925. 1,527,866

R. RL HALL PIPE HOLDING AND TURNING MENS Filed July s1 1922 l 2H lll/1,.

.TMve/vra. FAU-ff P. #ALL Patented F eb. 24, 1925.

UNITED STATES PATENT oFjFlcE.

RALPH R. HALL, OF LONG BEACH, CALIFORNIA, ASSIGNOR TO SAID HALL, CHESTERA. RASMUSSEN, AND WM. A. TROUT, ALL OF LONG BEACH, CALIFORNIA.-

PIPE HOLDING AND TURNING MEANS. l

Application led July 31, 1922. Serial No. 578,835.

To all whom t may concer/rw Be it known that I, RALPH R. HALL, a citizenof the United States, residing in the city of Long Beach, county of LosAngeles, and State of California, have invented certain new and usefulIm rovements in Pipe Holding and Turning eans, of which the following isa specification.

My invention relates to means for receiving, holding and turning pipeand tubing o-f different sizes while it is being worked on. The work maybe to slightly countersink the insides of the ends of the pipe, tothread the outside of the ends, or to cut the pipe. The principal objectof my invention is to provide a machine or device which will so grip andhold a length of pipe and turn the same that the ends of the pipe willbe accessible for such treatment as it may be desired to give it.

Another object of my invention is to provide in such a device means forcentering the pipe so that it will turn true, said means being adaptedto grip and turn the pipe placed thereon. V

In order to 4fully eXplan my invention, I have shown it in a practicalembodiment on the accompanying sheet of drawings, which I will nowdescribe.

Figure 1 isa longitudinal sectional view through the tail stock meansfor receiving one end of the pipe;

Figure 2 is a right hand end view of Fig. 1, with structure complete; 35Figure 3 is a cross, vertical sectionaly view taken on line 3-3 of Fig.4; and

Figure 4 is a longitudinal sectional view through the head stock meansfor receiving, holding and turning a pipe section.

Referring in detail to` the drawings, 1, designates the tail stock of alathe, or similar machine for handling pipe sections, and 2 the headstock thereof, the turning power being applied through the head stock inthe usual manner. j

In developing my invention, I provide pipe holding means for the headstock and for the tail stock which are similar in many respects, butwhich differ in some important details.

Referring first toV Figs. 4 andB, I will describe the head stock meansfor receiving,"- holding and turning a pipe section. The body comprisesthe internally threaded portion 8, the nut portion, 4, the threadedportion, 5, the conical portion, 6,'tl1e uniformly round portion, 7, andthe nut,V 8, a washer, l 9, being interposed between the nut 8 and theportion 7, as shown. Mounted on the body is an outer conical member 10,internally threaded at its large end to turn on the threaded portion 5of the body, as shown, l the interior of said conical member 10 beingenlarged, as at 10a and 10b to move over the conical portion 6, and thewasher 9, as clearly shown in the sectional view, Fig. 4. Mounted insaid conicalymember 10 are four Y radially disposed grippingjaws 11,11,with their inner ends bearing on the conical portio-n 6 and their outerends provided with teeth, 11a and adapted to grip the inside of a pipeP, placed thereover, as shown in Figs. l 3 and 4. Seated in said conicalmember 10, are spring-pressed plunger elements 12, having pins7 13,workingthrough slots, 14, and engaging with said jaws 11, for thepurpose vof normally holding said jaws in place and at the same timeallowing them to be forced outwardly by the conical portion 6, when saidbody is turned into said outer conical member 10. Said outer conicalmembeil 10, is also provided with holesor sockets, 10C to receive a toolfor holding the same, or for turning the same relative to the threadedportion 5, as will be readily understood from the drawings.

Referring now to Figs. 1 and 2, the tail stock device comprises a bodywith a shank 20, to lit into the tail stock, a nut portion 21, and ashaft 22, with nut 23 and washer 24. Mounted on the shaft portion 22, isa sleeve member, 25, having a conical externa-l portion, 25a. ,Mountedon said sleeve 2.5, is an outer conical member 26, provided withradially disposed jaws, 27, mounted therein and yieldingly held in placeby means of spring-pressed pins, 28, working in slots 29, cut in thebody of the member 26, as clearly indicated. Said jaws 27 are alsoprovided on their outer ends with teeth, 27a disposed 100circumferentially of the conical member 26, whereby to grip the insideof a pipe section placed thereon and hold it against longitudinalmovement over the tools. The inner ends of said jaws bear lon theconical surface of the sleeve 25, as shown, whereby as said tail stockis moved toward the pipe, the move ment ot the'conical sleeve 25`Will-operate to force thejaws 27 outwardly iiitothe-pipe, shoivn inplace in light dotted lines. VThe conical member 26 isprovidediat-itsrear-or vtheretore,`=lin`iitj"the invention to theshowing larger end with an annular channel, 2 6, wheieby a tool, as atT, can be' inserted therein, against the end of the pipe, P, for thepurpose of preventing the conical yineniiber 26, from being pushedtoofar into' thefe'nd of the` pipe as the tail stoclr is movedl upintov.place to hold the'pipe, Which movement also forces lthe shaft portion22 and `sleeve25 into the conical member 26, being held'by i said tool.Thus the jaws 27 arel forced 'ut- Wardly into holding position'as thetails'to'ck is moved up into -placeand made secure.

rlhe pipe is handlejdby Vswinging cranes or other lifting means andasfswung'into Vplace over' the machine, one;end 1is i'eadily j guidedo-ver the head stock Aand conical inember l0, and the other end isyguided over the conical member 26, of the tail stock ,i or `in positionso that as said tailstoclr is moved vup to it, said conical member 26enters the end oi the pipe, theA conicalshape"of-'said membeismaking itmuch easier to put' the pipe in place. It Will be seen as the parts aresecuredin place, the' grippingjaws are inwardly from the ends oit thepipe, leaving the ends or the pipe free to bel Worked on, either ontheir inner or outer sides, -asfniay be desired. Any suitable lathetoolcaii be used thereon as the pipe `is rthuslheld'and turned, andthepipe can be quickly hai-idled, secured in place and again removed. sthe jaws are moved out into engagement vvith the Plpea they operate ltocenter the pipe and yto siii@ accurately centered, for vit oitenhappensthat a pipe is thicker on one side than on another. Another advantage isthat'theentire outside surface of the pipe isigtree tobe Worked on.

Referring to Fig. l, I have provided a stop pin, 30, set in tliefi'earend of the member 26, with a lateral f, pin 3l projecting purpose ofholding the head 26 from being accidentally moved should the pipestr'ikethe conical part oit, that. is, when the pipe "is being placed ovei' thestock and'befiiore it is in place for the jaws to be moved outmade,except as may be limited by the heretov appended* claims.

Iclaim: j in ,a device fof the'icharacter shown and described,` an inner:member 'ha-ving `two 4cylindific'alfportionsffoii [different sizes witha conical Aportion therebetween, fan outer i member acylindrical portion'and -a conical portion andf 'ad'apte'di-to lit over said inner "member,radial'h'olding javvs through thek cylindrical. portion otsaid 'outer'member, withY their ,inner ends engaging" the conical p irtion oftheinner meni'ber, whereby when said outer Iandinner members`aief`finov`ed relative to. each other as aid holding 'jaws areoperated, the conical ,portion ot-fsaid-'ou'ter memberv moving over theouter" and smaller v cylindrical .portion-ofthe inner member,lsubstantially zas. described.

f 2. lIn a dev-ice orP theL character referred to,

an inner member lhavingfa cylindrical threaded portion, a conicalpoitionand' a.

ysmaller cylindrical portion, anouteimeinber having ya cylindrical.'portion' rthreaded `over the threaded cylindrical portion of "saidinner member `and havingi aconical" vj oortin over the smallercylindiicalportion'ot'said f inner member, radial .holdingj a'wsthroi'igh the cylindricalafportion of said. outeiFnie'mbei `Withtheirinner ends bearing onthe conical portion'of said innerimember,Ywhereby` v'vlien said fouteraiid kinner membfe'rsare turned t lrelativeto each Vother and lmovedfby said it and hold it firmly. It ,Willbe'noted that the pipe is thus centered from the in- V'side and not fromthefoutside and more threads longitudinally of i each. other' A saidholdingjaws Vare A moved radially in said' outer member.

d3. Ina pipe holdingy a turninglmechanism, an inner supporting memberhaving alarger andl a smaller cylindrical portion .vv-ith a outer end ofsaid mechanism, A"whereby to Umore easily be inserted intotheend ci aradial holding jaws through the outer member With their inner endsbearing on the conical portionof said inner member and .operabletherebyWhen saidoiitferA and'iiiner membersare nio-vedy relatively, theinside'oic rire7 the conical portion'ot'sa'id outer/member having asliding fit over the smaller' cylindreal portion of said inner memberand being internally enlarged to move over the conical part of saidinner member, to permit movement relatively of seid outer member oversaid inner member, and means for supporting and turning said innermembers, substantially as described.

Signed at Los Angeles, Los Angeles County, California, this 26th day ofJuly,

RALPH R. HALL. Witnesses:

W. R. LITZENBERG, ARTHUR J. HUGHES.

